Possible performance breakthrough? Worked for me...

[Slick230]

OK, so I, like many of you here, have had FPS issues since launch. Mining for bits and pieces of fixes, mods, mythical cures, and hints of possible solutions to this plague whispered in dark corners and alleyways of the Web.

What I found, and has worked for me:

On my original Windows 8.1 install, the game would run horribly, 3-4 fps at the start of the campaign, never getting much better. Didn't see how this should be, given my specs, which may not be bleeding edge, but are not ancient, either:

AMD Phenom II X6 1090T, running at stock clock 3.2Ghz, no turbo cores enabled, stock cooler
EVGA GTX 660, stock clocks
16GB of Kingston Hyper-X RAM, @ 1333Mhz
This running on an HP Pavilion HPE h8-1214 with a crippled a Gigabyte 2AC8 motherboard

Never had any problems playing anything else with this setup, but Rebirth hated me... until I removed the Microsoft Hyper-V features from my Windows install.

Afterwards, I can now get 25-35FPS around stations and traffic, and up to 40-50FPS (VSYNC on) in open space.

The roundabout way I found this fix was to install not 1 but 2 bare bones Windows installs on other partitions, and try playing the game in those installs. No problems at all, fluid gameplay, no stuttering, no hiccups. But being bare bones installs, they did not have Hyper-V enabled. So I used some Google-Fu and found that Hyper-V has been known to cause severe performance hits while gaming in certain instances, EVEN IF NO VM WAS RUNNING AT THE TIME. The reason being once you enable Hyper-V, your desktop and host PC is essentially running in a VM of it's own.

Now this has never caused an issue with any other games I've played before, with Hyper-V enabled. But it seems that Rebirth DOES NOT like it, whether a VM is running or not.

This is something Egosoft should look into, and I hope this info can help others like me who may have Hyper-V installed and are having FPS issues. This may not be a fix for everyone, but if a few people see an improvement, it's something.

[Raxeus]

Have you tried creating a blank extra log in account on your Primary OS?